Combination air chuck and gauge



April 14, 1931. p. LEGNA-RD A 1,800,393

COMBINATION AIR CHUCK AND GAUGE Filed July 18', 1925 ATIORNEYS Patented Apr. 14, 1931 PERRY LEONARD, GF EFEINGHAM, `IKJLLWSJS COMBINATION Ain encon ann. @einen Application filed July 18,

This invention relates to a combination air chuck andgauge, and lhasfor its object the provision of a device of this character especially designed for use in inflating pneumatic tires and gauging the pressure in such tires.

Another object resides in the provision of a combination air chuck and gauge of this character and which may be readily and easily y manipulatedto afford a gauge reading of the amount 01"' pressure in the tire yat any time `during the delivering operation and without the necessity of removing the chuck from the valve stem of the pneumatic tire.

A further object is to provide a combination air chuck and valve having these advantages and capacities and which is so constructed and organized that the gauge is neverl l subjected tothe full shock of air line pressure.

A still further object resides in the provision of a combination airv chuck and gauge of the character specified and which is of simple and durable construction, reliable and accurate in operation, easy and comparatively inexpensive to manufacture and not liable to get out of order or to require repairs, replacements, or adjustments.

Other objects and advantages reside in certain novel features of the construction, '30 arrangement and combination of'parts which will be hereinafter more fully described and particularly pointed `out in the appended claim, reference being had to the accompanying drawings forming a part of this specifiation, and in which: l Figure 1 is a perspective view showing the combination air chuck and gauge applied to the valve stem of a pneumatic tire,

Figure 2 is a view showing the air chuck and gauge in vertical section, and

Figure 3 is a view showing the/same in horizontal section.

Referring to the drawings, the numeral 1 designates the hollow body of the chuck which is provided with a nipple 2 to which the air line 3 is connected. rl`he hollow body 1 has a chamber l therein and this chamber communicates with the air line 3 under the control of the rotatable plug valve y5 of conical form and rotatably fitted in a correspondingly 1925. Serial No. 44,570. l l

formed transverse opening 6 provided in the nipple 2. rlhe valve 5 is held in snug engagement with the wall oi' its opening 6 by means ofa lcoil spring 7 having one end engaging the nipple and the other end. engaging apin 5l 8 or other suitable fastening means carried by the valve 5. The valve 5 has a port 9 therein which registers with the bore 2a oi' the nipple 2 in one position of the valve ybut which may be turned to position out of register with the bore 2a to vblock the bore 2a :torv a purpose. which will hereinafter more fully appear.

A cap 10 is threaded on the hollow body 1 and has a central opening 11. A packing member or gasket 12 is carried by the cap and'has a portion 13 of frusto-conicalv form designed to engage the valve stem of the tirey valve 14 and eiectively pack the same. valve 15 is mounted withinthe hollow bodyl and includes a sleeve 16 formed with a tapered or truste-conical inner wall 17 designed to co-act with the innerwportion of the gasket 12 to prevent the escapeof air vwhen Vthe valve 15 is seated onthe gasket and the tire valve opened. At its inner end the sleeve 16 is closed by an end wall 18 so that the pressure of the springQO is elective'to seat the valve 15. A stud 19 is integrally formed with the-end Wall 18 oi the valve 15 and this stud projects down through the gasket and is adapted to engage the valve stem o1c the 'tire valverto open the tire valve. The valve 15 is unseated by virtue of the engagement of the stud 19 with" the tire valve stem and' also by virtue of the engagement of the end-wall 18 with the outer end ofthe .barrel of the tire valve." c V y A ycoiled'tubular member 20" is provided in the hollow body 1 and has one end thereof straightened out, as indicated at 21, and extended through an opening formed yin thel stud 19. rlhe other end of the coiled tubular member 2O is' connected Vwith an air Igauge 22 suitably iiXed or mounted on the top of the hollow booi'y 1. Tho tubular noolooiooi` 2o 95 serves to convey fluid pressure from the tire to the gauge as will hereinaftermore clearly appear and is also elastic and resilient and it is tensioned to yieldably hold the valve 15 seated against the gasket ll2. Y'

For the purpose of controlling the operation of the gauge a tapered or conical valve is provided and extends through an opening 26 formed in the tubular member 2O at a point adjacent its connection with the gauge 22. This valve 25 is held in' snug engagement with the wall of its opening 25 by means of a coil spring 27 but it is to `be understood that the valve 25 is rotatable in the opening 26. A port 28 is formed in the valve 25 and is designed to be brought vinto registry with the bore of the tubular member 2O or to Vbe moved out of registry with the bore of this tubular member to block the passage of liuid' therethrough.

Manually controllable motion transmission is provided between the valves 5 and 25 for the purpose ot' opening the valve 25 when the valve 5 is closed and for opening the valve 5 when the valve 25 is closed.r This motion transmission mechanism includes a gear wheel 30 lixed to the valve 5 and a gear wheel 3l lined to the valve 25 and meshing with the gear wheel 30. The gear wheels 3() and 3l are enclosed in a suitable casing 32 having a removable'plate, as shown. rlhe valve 5 or the aXis of the gear wheel 80 projects eX- teriorlyof thecasing 3l and carries an operating lever or linger vpiece 33 to facilitate manipulation of the valves. Oi course, it is to be understood that the ports 9 and 29 are so related with respect to the bores that they control and with respect to each other that when one is yopened the other is closed. The gauge 22 may be o1c any conventional type and has its dial in its top. The dial contains luminous figures and indicia and has a luminous pointer Jco-acting therewith so that it may be read at night. A transparent and unbreakable crystal is provided to cover the barrel and this crystal may be covered Vby a protective netting of wire.

Vhen the air chuck has been applied to the valve stem of thetire and the lever 83 turned to open valve 5 and close valve 25, valve l5 having been Yopened by such application, the air will'vlow into the tire through the usual valve to which the chuck is applied. When the operator thinks that sufficient air has been admitted tothe tire he turns the lever 33 -to close the valve 5 and shut o' the air ksupply and to simultaneously open the valve 25 which connects thegauge withthe interior of thetire through theihollow coil spring 2O so that aglance at the gauge will disclose the pressure in the tire. The gauge `reading is right vbefore the eyes of the operator and is had without removing the chuck from the tire. The facility with which the pressure maybe knowninsures accurate andproper inlation and avoids the blowouts due to overinlation and the deterioration of the tire due to underiniiation. I claim:

VIn a device of` the class described,an air chuck, a gauge mounted on said chuck, an air line leading to said chuck, said chuck having an inlet for cooperation with the barrel of a tire valve, a valve normally closing said inlet and providedwith an opening having a hollow stud located therein for unseating the tire valve when the chuck is applied thereto, said chuck inlet-closing valve'having means to cooperate with the barrel of the tire valve to open said chuck valve when the chuck is applied, a resilient spiral tubular member communicating at one end with the gauge and extending ati-ts other end into the hollow stud of the tire valve-unseating element to atlord direct communication between the pressure in the tire and the `gauge and to operate as a springto yieldably hold the chuck inlet valve seated when the chuck is not 1n use.

PERRY LEONARD. Y 

